Door threshold for access to the interior of a railway vehicle

Abstract

The door threshold for a railway vehicle is intended to partially fill the gap between the vehicle and a platform. It comprises a support ( 22 ) which can be connected to the structure ( 16 ) of the railway vehicle and a strip ( 24 ) which is retained by the support ( 22 ). The strip ( 24 ) can be displaced between a normal position, in which it projects relative to the support ( 22 ), and a position retracted in the support ( 22 ). It comprises means ( 30 A, 30 B) for clamping the strip against at least a clamping surface ( 30 A, 30 B) of the support in order to produce friction of a specific value between the strip ( 24 ) and the support ( 22 ) counter to the displacement of the strip ( 24 ) relative to the support ( 22 ) in the plane of the or each clamping surface ( 30 A, 30 B).

1. Door threshold for a railway vehicle, which threshold is intended to partially fill the gap between the vehicle and a platform, comprising a support which can be connected to the structure of the railway vehicle and a strip which is retained by the support, which strip can be displaced between a normal position, in which it projects relative to the support, and a position retracted in the support, wherein said threshold further comprises means for clamping the strip against at least a clamping surface of the support and for producing friction of a specific value between the strip and the support counter to the displacement of the strip relative to the support in the plane of the or each clamping surface, and
 wherein the clamping means is the only means for retaining the strip. 
 
   
   
     2. Door threshold according to  claim 1 , wherein the strip and the support comprise means for guiding the strip from the normal projecting position into the retracted position thereof, which means are provided at the ends of the strip. 
   
   
     3. Door threshold according to  claim 1 , wherein the strip is formed from a polymer material. 
   
   
     4. Door threshold according to  claim 1 , wherein the strip has at least a hooking profile for a traction tool allowing displacement of the strip from the retracted position to the normal projecting position thereof. 
   
   
     5. Door threshold according to  claim 1  and further comprising at least a stop for longitudinally arresting the strip, which stop is fixedly joined to one of the strip or the support and is received so as to slide in a slot which is provided in the other of the strip or the support, which slot extends in the direction of movement of the strip. 
   
   
     6. Door threshold according to  claim 1 , wherein the support delimits a cap for retaining the strip, which cap has two facing clamping surfaces, between which the strip is retained by a press-fit. 
   
   
     7. Door threshold according to  claim 6 , wherein the support comprises a metal profile-section having two arms, each of which has a clamping surface and delimits the cap for retaining the strip, the two arms being connected in the profile-section by a web, with which they are integrally formed. 
   
   
     8. Door threshold according to  claim 6 , wherein the cap delimits a free space for receiving the strip in the retracted position thereof. 
   
   
     9. Door threshold according to  claim 7 , wherein the cap delimits a free space for receiving the strip in the retracted position thereof. 
   
   
     10. Door threshold according to  claim 1 , wherein the clamping means comprises at least a tie rod which is fixedly joined to a first of the strip or the support, which tie rod is arranged so as to slide relative to the second of the strip or the support and is supported on the second of the strip or the support, the tie rod applying a force for clamping the strip against the clamping surface of the support. 
   
   
     11. Door threshold according to  claim 10 , wherein the tie rod comprises a clamping screw which can adjust the clamping force applied by the tie rod. 
   
   
     12. Door threshold according to  claim 10 , wherein one of the strip or the support comprises a T-shaped slot which is provided over the thickness thereof and in that the tie rod comprises a strip which is received in the slot. 
   
   
     13. Door threshold according to  claim 11 , wherein one of the strip or the support comprises a T-shaped slot which is provided over the thickness thereof and in that the tie rod comprises a strip which is received in the slot. 
   
   
     14. Door threshold according to  claim 10 , wherein the T-shaped slot is provided in the strip and opens at an end which is arranged at the side directed towards the retracted position of the strip. 
   
   
     15. Door threshold according to  claim 11 , wherein the T-shaped slot is provided in the strip and opens at an end which is arranged at the side directed towards the retracted position of the strip.